کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6578998 | 1422930 | 2018 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
On concentration polarisation in a fluidized bed membrane reactor for biogas steam reforming: Modelling and experimental validation
ترجمه فارسی عنوان
در قطبش غلظت در یک راکتور غشای سیلیکونی بستر برای اصلاح بخار بیوگاز: مدلسازی و اعتبار سنجی آزمایشی
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
بیوگاز، اصلاح بخار، راکتور غشاء، تولید هیدروژن،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
چکیده انگلیسی
The production of pure hydrogen through the steam reforming of biogas in a fluidized bed membrane reactor has been studied. A phenomenological one-dimensional two-phase fluidized bed reactor model accounting for concentration polarisation with a stagnant film model has been developed and used to investigate the system performance. The validation of the model was performed with steam reforming experiments at temperatures ranging from 435â¯Â°C up to 535â¯Â°C, pressures between 2 and 5â¯bar and CO2/CH4 ratios up to 0.9. The permeation performance of the ceramic-supported PdAg thin-film membrane was first characterized separately for both pure gas and gas mixtures. Subsequently, the membrane was immersed into a fluidized bed containing Rh supported on alumina particles and the reactor performance, viz. the methane conversion, hydrogen recovery and hydrogen purity, was evaluated under biogas steam reforming conditions. The resulting hydrogen purity under biogas steam reforming conditions was up to 99.8%. The model results were in very good agreement with the experimental results, when assuming a thickness of the stagnant mass transfer boundary layer around the membrane equal to 0.54â¯cm. It is shown that the effects of concentration polarisation in a fluidized bed membrane reactor can be well described with the implementation of a film layer description in the two-phase model.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Journal - Volume 348, 15 September 2018, Pages 232-243
Journal: Chemical Engineering Journal - Volume 348, 15 September 2018, Pages 232-243
نویسندگان
Niek de Nooijer, Fausto Gallucci, Emma Pellizzari, Jon Melendez, David Alfredo Pacheco Tanaka, Giampaolo Manzolini, Martin van Sint Annaland,